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【单选题】
营养液 pH 的控制可用 的方法来解决。A.
加入酸或碱中和
B.
B 更换营养液
C.
适当改变营养液配方中盐类的搭配
D.
D 补充营养液
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举一反三
【单选题】The policeman warned the man ( ) after drinking.
A.
not to drive
B.
to drive
C.
driving
D.
not to driving
【单选题】The policeman warned the man ____after drinking.
A.
not to drive
B.
to drive
C.
driving
【单选题】The policeman warned the drive ________ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
doesn’t drive
【单选题】The policeman warned the robber ___ his knife.
A.
A, to take up
B.
B, to put down
C.
C, not to put down
D.
D, to wave
【单选题】The policeman warned the driver ______ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
didn’t drive
【单选题】The policeman warned the driver ________ so carelessly.
A.
never to drive
B.
to never drive
C.
to not drive
D.
doesn’t drive
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